About 3993 inventory gb29768 label rate problem

[伟民]

Hello!

Dear ST technician!

About 3993 ST25RU3993 Reader Suite software, inventory GB29768 tags, encountered a problem, want to consult:

Now use STM32L476 +3933 chip, test the official source code (see the bottom picture), use ST25RU3993 Reader Suite,

Inventory GB29768 tags, BLF select 640KHZ, can not Inventory to the tags, except 640 other drop-down selection rate, can Inventory to the tags,

Now the reason is not clear, the code seems to be ok, it is not clear whether ST25RU3993 Reader Suite software menu selection is not selected,

Or is there something in the code that needs to be changed,

Above request, because the project is urgent, also hope to help support, thanks a million!

[Cedric Dalban · Accepted solution]

Hello,

Everything you do in the Reader suite is correct, this is unfortunately a limitation of our Eval board.

The current MCU being used (STM32L4) has a maximum frequency (80MHz) which does not allow to reach the 640KHz (only 349KHz is reachable).

If using other MCU able to reach higher frequencies (such as ST32L4+: https://www.st.com/en/microcontrollers-microprocessors/stm32l4-plus-series.html going up to 120MHz or even more powerfull MCUs such as STM32H7, STM32F4, ST32G4, STM32F7, ...), this frequency will be supported.

best regards,

Cedric

[伟民]

Oh�?
I see now!
Thank you very much for your timely reply!
I wish you good health�?